#! /bin/bash
#
# gitea.sh
# Backup script for Gitea. Meant to be sourced by our main backup script
# Copyright (C) 2020 Vintage Salt <rehashedsalt@cock.li>
#
# Distributed under terms of the MIT license.
#

set -e

export OUTDIR="$BACKUPSDIR/{{ gitea.url }}"
retention=7 # 7-day retention period

# Sanity checks
if [ -z "$BACKUPSDIR" ]; then
	log "BACKUPSDIR was undefined. Run the main backup script instead of this one."
	return 1
fi
if ! [ -d "$OUTDIR" ]; then
	if ! mkdir "$OUTDIR"; then
		log "Unable to find or create output directory: $OUTDIR"
		return 2
	fi
fi
# Enforce permissions on our output directory since the git user will need them
chown root.git "$OUTDIR"
chmod 770 "$OUTDIR"

# Purge oldest backup if we need to
currentbackupcount="$(ls -1 "$OUTDIR" | wc -l)"
if (( currentbackupcount >= retention )); then
	lastbackup="$(find "$OUTDIR" -name \*.zip 2>/dev/null | sort | head -n 1)"
	if [ -f "$lastbackup" ]; then
		log "Removing old backup: $lastbackup"
		rm "$lastbackup"
	fi
fi
# WE MAKE BACKUP NOW SERGEI
if cd "$OUTDIR"; then
	log "Initiating gitea dump"
	su git -c "gitea dump -c /etc/gitea/app.ini"
else
	log "Could not change directory: $OUTDIR"
	return 3
fi